ULTRASMALL PARTICLES OF CDSE AND CDS FORMED IN NAFION BY AN ION-DILUTION TECHNIQUE

被引：52

作者：

SMOTKIN, ES ^{[1
]}

BROWN, RM ^{[1
]}

RABENBERG, LK ^{[1
]}

SALOMON, K ^{[1
]}

BARD, AJ ^{[1
]}

CAMPION, A ^{[1
]}

FOX, MA ^{[1
]}

MALLOUK, TE ^{[1
]}

WEBBER, SE ^{[1
]}

WHITE, JM ^{[1
]}

机构：

[1] UNIV TEXAS,DEPT CHEM,AUSTIN,TX 78712

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1990年 / 94卷 / 19期

关键词：

D O I：

10.1021/j100382a044

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The transition of semiconductor chalcogenides from molecular CdX (X = Se, S) to bulk material has been observed in Nafion, a cation-exchange membrane. The two-phase structure of Nafion, consisting of a hydrophobic region and ionic clusters, has been utilized to form ultrasmall particles of CdS/Se by using a technique analogous to an inverted micelle microemulsion method, where the Cd ion/ionomer cluster ratio is controlled by diluting the cadmium-exchange solution with an inert ion (Ca2+). The absorption onset for the cadmium chalcogenides formed can be tuned over a range of more than 3.5 eV by varying the Cd2+/Ca2+ ratio in the solution used to exchange the acidic form of the ionomer membrane. © 1990 American Chemical Society.

引用

页码：7543 / 7549

页数：7

共 39 条

[1] A SIMPLE-MODEL FOR THE IONIZATION-POTENTIAL, ELECTRON-AFFINITY, AND AQUEOUS REDOX POTENTIALS OF SMALL SEMICONDUCTOR CRYSTALLITES [J].

BRUS, LE .

JOURNAL OF CHEMICAL PHYSICS, 1983, 79 (11) :5566-5571

[2]

EISENBERG A, ACS S SERIES, V180

[3]

FELTON R, UNPUB

[4] PHOTOCHEMISTRY OF SEMICONDUCTOR COLLOIDS .11. SIZE QUANTIZATION EFFECTS IN Q-CADMIUM ARSENIDE [J].

FOJTIK, A ;

WELLER, H ;

HENGLEIN, A .

CHEMICAL PHYSICS LETTERS, 1985, 120 (06) :552-554

[5]

FOJTIK A, 1985, CHEM PHYS LETT, V120, P6

[6] HETEROGENEOUS PHOTOCATALYTIC OXIDATION OF CYANIDE AND SULFITE IN AQUEOUS-SOLUTIONS AT SEMICONDUCTOR POWDERS [J].

FRANK, SN ;

BARD, AJ .

JOURNAL OF PHYSICAL CHEMISTRY, 1977, 81 (15) :1484-1488

[7] SUPEROXIDE GENERATION IN PHOTOLYSIS OF AQUEOUS CADMIUM-SULFIDE DISPERSIONS - DETECTION BY SPIN TRAPPING [J].

HARBOUR, JR ;

HAIR, ML .

JOURNAL OF PHYSICAL CHEMISTRY, 1977, 81 (18) :1791-1793

[8] PHOTO-DEGRADATION AND FLUORESCENCE OF COLLOIDAL-CADMIUM SULFIDE IN AQUEOUS-SOLUTION [J].

HENGLEIN, A .

BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 1982, 86 (04) :301-305

[9] SMALL-PARTICLE RESEARCH - PHYSICOCHEMICAL PROPERTIES OF EXTREMELY SMALL COLLOIDAL METAL AND SEMICONDUCTOR PARTICLES [J].

HENGLEIN, A .

CHEMICAL REVIEWS, 1989, 89 (08) :1861-1873

[10] STRUCTURE AND OPTICAL-PROPERTIES OF CDS SUPERCLUSTERS IN ZEOLITE HOSTS [J].

HERRON, N ;

WANG, Y ;

EDDY, MM ;

STUCKY, GD ;

COX, DE ;

MOLLER, K ;

BEIN, T .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1989, 111 (02) :530-540

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